Hydrogen production via ethanol steam reforming over Ni/Al 2O3 catalysts

Effect of Ni loading

Ahmed Bshish, Zahira Yaakob, Ali Ebshish, Fatah H. Alhasan

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Catalytic systems play an important role in hydrogen production via ethanol reforming. The effect of Ni loading on the characteristics and activities of Ni/Al2O3 catalysts used in pure ethanol steam reforming are not well-understood. Two series of catalysts with various Ni loadings (6, 8, 10, 12, and 20 wt. %) were prepared by impregnation (IMP) and precipitation (PT) methods and were tested in reforming reactions. The catalysts were characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), temperature-programmed reduction (TPR), and scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM-EDAX). Powder XRD patterns of all the catalysts exhibited only NiO. Lower Ni loading catalysts were more efficient in H2 production, as evidenced by the finding that a 6 wt. % Ni catalyst, synthesized via the PT method, yielded 3.68 mol H2 per mol ethanol fed. The high surface area and small crystallite size of the low Ni loading catalysts resulted in sufficient dispersion and strong metal-support interactions, which closely related to the high activity of the 6 PT catalyst.

Original languageEnglish
Article number012601
JournalJournal of Energy Resources Technology, Transactions of the ASME
Volume136
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

Fingerprint

Steam reforming
Hydrogen production
ethanol
Ethanol
catalyst
hydrogen
Catalysts
Reforming reactions
scanning electron microscopy
X-ray diffraction
Scanning electron microscopy
effect
Crystallite size
Catalyst supports
Impregnation
Diffraction patterns
X-ray spectroscopy
Energy dispersive spectroscopy
surface area
Metals

Keywords

  • Ethanol reforming
  • Hydrogen production
  • Nickel catalysts

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Geochemistry and Petrology

Cite this

Hydrogen production via ethanol steam reforming over Ni/Al 2O3 catalysts : Effect of Ni loading. / Bshish, Ahmed; Yaakob, Zahira; Ebshish, Ali; Alhasan, Fatah H.

In: Journal of Energy Resources Technology, Transactions of the ASME, Vol. 136, No. 1, 012601, 01.01.2014.

Research output: Contribution to journalArticle

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